| Title | Quartz from, Guanajuato, Mexico |
| Description | Here we see sandy quartz crystals, SiO2 (silicon dioxide). These crystals grew into a vug (open space) although it is hard to tell from this photo. This specimen is about 10 cm across. |
| Location | Mexico. Near Guanajuato. |
| Photographer | Shannon Heinle. 2002-02-07. |
| Collection | University of North Dakota Mineralogy Collection #669. |
| Key words | quartz, Mexico |
| Tech details | 654 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 2254 |
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